JP3192185U - Grass root removal adapter for mower - Google Patents

Abstract

[PROBLEMS] In an adapter used by attaching to a mower to remove grass roots in the ground by rotating a portion protruding to the ground, even if the portion protruding to the ground is worn, it is not necessary to replace it immediately. It provides a grass root removal adapter that can adjust the amount of protrusion to the ground side.
A through hole 11 serving as a mounting hole is formed at the center as a grass root removing adapter X attached to a mowing machine for cutting a grass by attaching a detachable rotating blade to a vertical rotating shaft. It comprises a main body portion 10 made of a flat plate, one or more through screw holes formed in the main body portion, and bolts 30 that engage with the screw holes.
[Selection] Figure 2

Description

  The present invention relates to an adapter used for removing a grass root attached to a mower.

The hand-held mower has a blade attached to a vertical shaft that is rotated by an engine or electric motor at the tip, has a long handle, and mows the grass by moving the blade horizontally relative to the grass. Since the mower needs to hold the blade in a state where it floats from the ground to some extent, it can cut only slightly from the root of the stem, and it is difficult to remove the grass root.
On the other hand, in the following patent document, a rotating blade is installed so as to face obliquely downward or downward, and according to such a structure, grass roots existing on the ground can be removed.

Utility Model Registration No. 3175442 JP 2009-297015 JP JP 2010-154823 A Utility model 3117704 JP 2009-11308 A

By the way, the device described in the above-mentioned patent document must be replaced when the blade is worn, and the amount of protrusion of the blade cannot be adjusted.
In view of such problems, the present invention eliminates the roots of grass in the ground by rotating the portion that protrudes on the ground, and in an adapter that is attached to a mower and used, even if the portion that protrudes on the ground wears out. It is an object to make it possible to adjust the amount of protrusion to the ground side without the need for immediate replacement.

In order to solve the above problems, the present invention has the following configuration.
The invention described in claim 1 is a grass root removal adapter that is attached to a mowing machine that cuts grass by attaching a rotary blade that can be attached to and detached from a vertical rotary shaft, and is a through-hole that serves as an attachment hole in the center portion. It has a main body part which consists of a flat plate body in which a hole is formed, one or more threaded screw holes formed in the main body part, and a bolt which engages with the screw hole.
The invention according to claim 2 is the grass root removal adapter, wherein a nut is engaged with the bolt in addition to the screw hole.
According to a third aspect of the present invention, in the grass root removal adapter, there are a plurality of screw holes, and the screw holes are provided on a plurality of different concentric circles with respect to the through hole.
The invention according to claim 4 is the grass root removal adapter, wherein the main body portion is disk-shaped, and the vicinity of the outer peripheral end is formed so that the width is larger in the thickness direction than the thickness of the plate constituting the main body portion. It is what has been.

According to the first aspect of the present invention, the bolt tip protrudes toward the ground when attached to the mower, so that the grass root in the ground can be removed by rotating the bolt tip. And if the bolt is rotated, the amount of protrusion can be adjusted, so if the tip is worn, rotate the bolt so that it protrudes as much as it wears, and it will be in the same state as when it was not worn. Can be returned. Moreover, the amount of protrusion to the ground side can be appropriately adjusted by rotating the bolt according to the state of the ground.
According to a second aspect of the present invention, by engaging a nut with a bolt separately from the screw hole, the screw hole and the nut are fastened to each other so that the bolt is securely held at a desired position by the principle of a double nut. And can be fixed.
According to the third aspect of the present invention, since the bolt tip moves on a plurality of different tracks in the ground because the bolt exists on different concentric circles with respect to the rotation axis, the grass root can be more efficiently removed. it can.
The invention according to claim 4 makes it difficult to damage the stalk of the grass on the outer periphery of the main body by making the outer periphery of the main body thicker, so that it suppresses damage to nearby plants when removing the grass roots below. Can do.

(A) is a bottom view of the grass root removal adapter according to the embodiment, and (b) is a cross-sectional view taken along line AA of (a). It is a disassembled perspective view of the grass root removal adapter which concerns on embodiment. It is an enlarged side view near the tip of the mower with the grass root removal adapter according to the embodiment attached.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1A shows a bottom view of the grass root removal adapter X according to this embodiment, and FIG. 1B shows a cross-sectional view taken along the line AA of FIG. FIG. 2 is an exploded perspective view of the grass root removal adapter X. The grass root removal adapter X includes a main body 10 made of a disk-shaped plate, a bolt fixing portion 20 formed on the main body 10, a bolt 30 fixed to the bolt fixing portion 20, and a bolt cap 40 covering the bolt 30. The
The main body 10 is formed such that the outer peripheral edge is curved upward to form a slightly wider width near the outer periphery, and the central part is formed so that the upper part protrudes in a truncated cone shape. A through hole 11 for attaching to a predetermined mower is formed at the center. Here, the main body 10 is formed with an outer diameter of 180 mm.

  The bolt fixing portion 20 includes a through hole formed in the main body portion 10 and a welding nut 20a that is welded and fixed to the upper surface side of the through hole portion. That is, the bolt fixing portion 20 is configured by a through screw hole made of a welding nut 20a for fixing the bolt. A total of six through-holes are formed, two each having an inner diameter of 6 mm, 5 mm, and 4 mm. The through holes having the same inner diameter are formed symmetrically with respect to the center of the main body 10. Further, the through hole with an inner diameter of 6 mm is provided on a circumference with a radius of 75 mm that shares the center with the main body 10, and the through hole with an inner diameter of 5 mm has a circumference with a radius of 60 mm that shares the center with the main body 10. The through hole having an inner diameter of 4 mm is provided on a circumference having a radius of 45 mm and having a center in common with the main body portion 10. Further, an angle r formed by a straight line connecting through holes having an inner diameter of 5 mm and a straight line connecting through holes having an inner diameter of 6 mm shown in FIG. And an angle s formed by a straight line connecting through-holes having an inner diameter of 4 mm is also formed at 45 degrees. An M6 welding nut 20a is welded and fixed to the through hole with an inner diameter of 6 mm, an M5 welding nut 20a is welded and fixed to the through hole with an inner diameter of 5 mm, and M4 is attached to the through hole with an inner diameter of 4 mm. The welding nut 20a is fixed by welding.

The bolts 30 are hexagonal bolts that are all screws having a nominal length of 30 mm, and two bolts each having a nominal diameter to be engaged with the weld nut 20a having the respective nominal diameters of the respective bolt fixing portions 20 are 6 in total. The book is attached. Further, a nut 30 a that engages with the bolt 30 is engaged and fixed in advance on the head side. The bolt 30 is made of a high-hardness material such as high carbon steel, stainless steel, or titanium.
The bolt cap 40 is a rubber cylindrical body whose upper surface is closed and fixed on the upper side of each of the bolts 30 and has an inner diameter that can be fitted to the bolt head and fixed to each of the bolts M4, M5, and M6. Is formed. The length of the bolt cap 40 is formed so as not to hinder the adjustment of the protruding amount of the bolt 30.

A method for using the grass root removal adapter X having such a configuration will be described below. First, the user removes the bolt cap 40 and rotates the bolt 30 with the nut 30a engaged with the bolt 30 moved to the head side, so that the bolt 30 protrudes from the bottom surface of the main body 10. Adjust the length. Here, it is assumed that each bolt 30 is adjusted so as to protrude 5 mm from the bottom surface of the main body 10. Thereafter, the nut 30a engaged with the bolt 30 is rotated and moved until it comes into contact with the main body 10, and further tightened to firmly fix the bolt 30. Thereafter, the bolt cap 40 is attached to each bolt 30. Next, the grass root removal adapter X is fixed to the mower C as shown in FIG. 3 through the through hole 11 of the main body 10. In this state, the mower C is driven to rotate the grass root removal adapter X and press against the ground from which the grass roots are removed. By such an operation, the tip of the bolt 30 rotates while scraping the ground, so that the grass roots existing in the ground can be cut and removed.
The grass root removal adapter X according to the present embodiment can adjust the protruding amount of the bolt 30 as necessary by the structure and operation as described above, and even if the tip of the bolt 30 is worn, As long as there is a margin in length, the bolt 30 can be returned to its original state by moving it by the amount of wear.
Furthermore, since the three bolts have different thicknesses and are arranged on different concentric circles, the ground can be stirred in a wider range and randomly by moving along the ground. Moreover, it can suppress that this cut | disconnects even if a main-body part contacts the surrounding vegetation because the outer periphery of the main-body part curves upwards, and also the outer edge of the main-body part 10 on the ground. Even if it touches the ground, it can suppress that the main-body part 10 rebounds violently.

  In addition, you may change suitably the number of bolts shown in the said embodiment, a position, thickness, etc. as needed. Moreover, the bolt fixing | fixed part 20 may be changed to a welding nut, and a screw may be directly cut into the through-hole of a main-body part. Furthermore, the shape of the main body is not limited to a disk shape, but may be a square shape or a rod shape.

X Grassroot removal adapter C Mower 10 Main body 11 Through hole 20 Bolt fixing part 20a Welding nut 30 Bolt 30a Nut 40 Bolt cap

Claims (4)

A grass root removing adapter that is attached to a mowing machine that cuts grass by attaching a rotary blade that can be attached to and detached from a vertical rotary shaft, instead of the rotary blade,
A main body portion composed of a flat plate body in which a through hole serving as a mounting hole is formed in the center portion;
One or more threaded holes formed in the main body,
A grass root removal adapter having a bolt engaged with the screw hole.   The grass root removal adapter according to claim 1, wherein a nut is engaged with the bolt in addition to the screw hole.   The grass root removal adapter according to claim 1 or 2, wherein there are a plurality of the screw holes, and the screw holes are provided on a plurality of different concentric circles with respect to the through holes.   The said main-body part is a disk shape, and the outer peripheral end vicinity is formed so that a width | variety may become large regarding the said thickness direction rather than the thickness of the board which comprises a main-body part. Grassroots removal adapter.

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